Renesas M30042040108X0ISAY

Overview

M30042040108X0ISAY from Renesas is a 4Mb serial STT-MRAM non-volatile memory IC with QSPI interface, 108MHz SDR clock rate, 1.71–2.0V supply, and industrial temperature range (−40°C to +85°C) in 8-pin SOIC package. It delivers SRAM-compatible read/write timing, zero write latency, and persistent data retention without backup power - deployed in factory automation controllers for real-time parameter logging.

For engineers reviewing the M30042040108X0ISAY datasheet, M30042040108X0ISAY pinout, M30042040108X0ISAY application, or M30042040108X0ISAY equivalent, key selection criteria include QSPI x4 interface compatibility, 1.8V core voltage tolerance, hardware write-protect (WP#) support, 256-byte augmented storage array programmability, and industrial-grade thermal reliability.

Technical Context

The M30042040108X0ISAY implements a 40nm pMTJ spin-transfer torque MRAM array with true random access, enabling byte-level writes without erase cycles. Its command architecture supports QPI (4-4-4), SDR/DDR modes, and eXecute-In-Place (XIP) to eliminate per-access instruction overhead.

It integrates dual data protection: hardware-based via WP# pin (active-low, no internal pull-up) and software-based via configurable status register bits (BPSEL[2:0], TBSEL, SNPEN). The device enters Deep Power Down (<3µs entry, <400µs exit) and Hibernate modes while preserving memory contents and configuration registers.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (5.2mm × 5.2mm), RoHS-compliant, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial non-volatile memory applications.

Compared with FM25V04-G and CY14V104N-ZSP25XI, the M30042040108X0ISAY uniquely combines 108MHz QSPI bandwidth, 1.8V operation, integrated augmented storage, and zero-latency writes - making it optimal for next-generation industrial edge devices requiring compact, high-speed, maintenance-free non-volatility.

Availability

M30042040108X0ISAY is available at Aetrix Electronics and suitable for factory automation controllers, multifunction printer engines, and industrial PLC I/O modules requiring stable component supply across extended product lifecycles.

Supply support for M30042040108X0ISAY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for industrial, automotive, and infrastructure markets.

The M30042040108X0ISAY belongs to Renesas' Persistent SRAM (P-SRAM) family - engineered to replace battery-backed SRAM and legacy nvSRAM in mission-critical industrial systems demanding zero-maintenance, high-reliability non-volatile storage.

FAQ

What is the exact memory density and organization of the M30042040108X0ISAY?

The M30042040108X0ISAY is a 4Mbit (512KB) serial MRAM device organized as 524,288 × 8 bits. Its main memory map spans 19 address bits (0x000000–0x07FFFF), and it includes a separate 256-byte augmented storage array accessible at 0x000000–0x0000FF. This structure enables simultaneous use of main storage and protected configuration space within the same M30042040108X0ISAY device.

Does the M30042040108X0ISAY support both Single Data Rate and Double Data Rate SPI modes?

The M30042040108X0ISAY supports Single Data Rate (SDR) mode at up to 108MHz but does not support Double Data Rate (DDR) operation. Its ordering code "0108" explicitly denotes 108MHz SDR capability. While the datasheet describes DDR timing for other variants, the M30042040108X0ISAY is configured and tested exclusively for SDR - confirmed by its "0108" performance suffix and absence of DDR timing specifications in its valid combinations table.

What package type and footprint does the M30042040108X0ISAY use?

The M30042040108X0ISAY uses an 8-pin SOIC package (5.2mm × 5.2mm body size), as indicated by the "SA" package code in its ordering string and confirmed in Section 4.2 of the datasheet. This standard SOIC footprint ensures drop-in compatibility with existing PCB layouts designed for legacy SPI flash or EEPROM devices, simplifying upgrade paths without board redesign.

How does the hardware write-protect (WP#) function on the M30042040108X0ISAY?

On the M30042040108X0ISAY, the WP# pin provides hardware-level protection for the status register when WP#EN bit (SR[7]) is set to '1'. When WP# is driven low, writes to the status register are blocked - preventing accidental modification of block protection or top/bottom selection bits. The pin has no internal pull-up and must be actively driven; leaving it floating will disable protection. This mechanism operates independently of software protection settings.

Is the M30042040108X0ISAY compatible with standard SPI controllers, or does it require special QPI support?

The M30042040108X0ISAY supports multiple SPI protocols: standard Single SPI (1-1-1), Dual SPI (1-2-2), and Quad SPI (1-4-4/QPI). It is fully compatible with standard SPI controllers in Single SPI mode. However, to achieve its rated 108MHz performance and full bandwidth, QPI (4-4-4) mode must be enabled - requiring a host controller with QPI-capable peripheral (e.g., Renesas RZ/A, NXP i.MX RT, or Microchip SAM E70).